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7 April, 08:31

A 0.1 M solution enatiomerically pure chemical compound D has an observed rotation of 0.20 degrees in a 1 atm sample container. The Molecular mass of the compound is 150.

a. What is the specific rotation of D? (I already know this part)

b. What is the observed rotation if this solution is mixed with an equal volume of a solution that is 0.1 M in L, the enantiomer of D?

c What is the observed rotation if the solution of D is diluted with an equal volume of solvent?

d What is the specific rotation of D after the dilution described in c?

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  1. 7 April, 11:23
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    What is the specific rotation of L, an enantiomer of D? the same than D but opposite sign. f. What is the observed rotation of 1 L of solution that contains 0,01 mole of D and 0.005 mole of L? (Assume 1 dm path length) calculate the difference between the two enantiomers 0.01 D - 0.05 L = 0.05 M "D" specific rotation = observed rotation / (cell path x concentration) cells path = 1dm (doesn't affect anything in the formula we can ignore it) observed rotation = specific rotation D x concentration D
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